Pulley.



No. 820,410. PATENTBD MAY 15, 1906.

v H. GJGRANNATT.

PULLEY.

APPLICATION FILED APR. 11 1905.

rneyu.

on ITED STATES PATENT OFFICE.

HENRY G. GRANNATT, OF LOS ANGELES, CALIFORNIA, ASSIGNOR ONE- HALF TO J. H. WADDINGHAM, OF LOS ANGELES, CALIFORNIA.

PULLEY.

I Patented May 15, 1906.

Application filed April 11, 1905. Sierial No. 255,001.

To all whom it may concern.-

Be it known that I, HENRY O. GRANNATT, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Pulleys, of which the following is a specification.

My invention relates more particularly to detachable pulleys; and the object thereof is to provide a detachable pulley that can be easily placed on a shaft and easily removed therefrom. I accomplish this object by the device described herein and shown in the accompanying drawings, in which i f Figure 1 1s a side elevation of a pulley embodying my invention, a section thereof being shown on the dotted lines marked 1 1 of Fig. 3 looking in the direction indicated by the arrow-head thereon. Fig. 2 is a transverse section of the pulley, taken on the line 2 2 of Fig. 1 looking in the direction indicated by the arrow-heads thereon, the shaft and means for holding the pulley thereon bein removed therefrom, showing the boltholes and bolts removed therefrom. Fig. 3 is a plan view of the pulley, showing the removable portion of the rim. Fig. 4 is an enlarged perspective view of the upper portion of the hub of the pulley which carries the locking-bolts or set-screws, the locking-bolts being removed therefrom. Fig. 5 is an enlarged' perspective view of one of the lockingplates, showing the bolt-holes therein.

In the drawings, A represents the rim of the detachable pulley, and B represents the spokes thereof.

A represents a wedge-shaped detachable section of the rim dovetailed into the rim, as shown in section in Fig. 1, and having an outside configuration, as shown in Fig. 3, and is adapted for placement or removal from the rim when it is desired to place the pulley on or remove it from shaft 0. This opening in the rim communicates With the open portion of the hub of the pulley, so that the pulley can be placed in position on the shaft by removal of the cap D. (Shown in enlarged perspective in Fig. 4.) This cap is provided with grooves D for the reception of the lugs E in the locking-block E. The locking-block is held in place by the bolts F, which hold the cap D firmly down on and against the shaft C. The set-screws G provide means for holding the pulley securely locked on the shaft.

A pulley provided with my detachable means can easily be taken from the shaft and replaced thereon by removing the cap and the detachable section of the rim. The detachable section A of the rim is provided with extensions a, that project beyond the removable section of the rim. These extensions are provided with means to bind the two ends of the rim together, thereby strengthenin the rim. The extension (1/ on small end 0 the wedge-shaped removable section is held in position and in turn holds the wedge by a screw 0, which securely fastens the two together.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

A pulley comprising a split rim, spokes, the hub portion of the pulley fashioned to receive a shaft, a cap fitted thereto and to one side of the shaft, said cap having grooves at each edge, blocks secured to certain of the spokes and provided with lugs which enter the grooves in the cap for holding the latter in place against the shaft, and means for closing the split portion of the pulley.

In witness that I claim the foregoin I have hereunto subscribed my name this 3 day of April, 1905.

HENRY O. GRANNATT.

Witnesses:

EDMUND A. STRAUSE, G. E. HARPHAM. 

